Year | Value | 2022 | 9,297 | 2021 | 9,258 | 2020 | 9,154 | 2019 | 9,051 | 2018 | 9,021 | 2017 | 9,090 | 2016 | 9,247 | 2015 | 9,457 | 2014 | 9,636 | 2013 | 9,668 | 2012 | 9,570 | 2011 | 9,467 | 2010 | 9,405 | 2009 | 9,423 | 2008 | 9,611 | 2007 | 9,874 | 2006 | 9,980 | 2005 | 9,901 | 2004 | 9,757 | 2003 | 9,587 | 2002 | 9,440 | 2001 | 9,419 | 2000 | 9,611 | 1999 | 9,927 | 1998 | 10,240 | 1997 | 10,602 | 1996 | 10,936 | 1995 | 11,132 | 1994 | 11,213 | 1993 | 11,201 | 1992 | 11,159 | 1991 | 11,185 | 1990 | 11,375 | 1989 | 11,719 | 1988 | 12,145 | 1987 | 12,605 | 1986 | 13,062 | 1985 | 13,490 | 1984 | 13,855 | 1983 | 14,123 | 1982 | 14,268 | 1981 | 14,264 | 1980 | 14,112 | 1979 | 13,818 | 1978 | 13,415 | 1977 | 12,955 | 1976 | 12,463 | 1975 | 11,965 | 1974 | 11,407 | 1973 | 10,847 | 1972 | 10,339 | 1971 | 9,825 | 1970 | 9,337 | 1969 | 8,962 | 1968 | 8,645 | 1967 | 8,330 | 1966 | 8,083 | 1965 | 7,921 | 1964 | 7,850 | 1963 | 7,885 | 1962 | 8,057 | 1961 | 8,351 | 1960 | 8,578 |
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